K.B. Wagers' Behind the Throne
This sci-fi book centers on a runaway princess (who left home to track down her father's killer and then she became a gunrunner, as one does), forced to return home after decades away after her sisters and niece are murdered--because it's a matriarchal (and Indian-themed) society, and so now she's the heir. The usual political and diplomatic shenanigans ensue, but the characters and world-building are likable and interesting, even if some of the plot points are a bit obvious. And I would describe the writing as "adequate" or "workmanlike." Maybe that all sounds negative, but I liked the book enough to want to read the next one in this series. B/B+.